Point Load On Roof

Introduction the point load test plt is an accepted rock mechanics testing procedure used for the calculation of a rock strength index.

Point load on roof.

50 psf x 14ft 700 pounds per lineal foot. For building owners and occupants this starts with a bulletproof implementation process designed to maximize your bottom line on your terms while you focus on your core business. The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot. The focus of this paper is to present the data analysis used to correlate the point load test index is50 with.

910 pounds per lineal foot. Point loads such as foot traffic and rolling loads. A clay tiled roof may have a dead load. A good example of a point load that is not anticipated is the sliding of a roof load of snow off the pitched roof onto a flat roof.

The influence of hurricanes or earthquakes can shift the designed loading of a structure. The weight of a worker walking across a steel building roof is a live load. The load increases with the use of heavier roofing material. Realize the new economics of solar.

This situation would cause a point load created by the pile of snow and if heavy enough could cause failure in the structure. For example in a garage cars trucks boats and rvs constitute live loads. 15 psf x 14ft 210 pounds per lineal foot. The coal mine roof rating cmrr.

Any objects moved in and out the structure are live loads including people designated as occupancy plants furniture and so forth. There are of course other activities on a roof that could contribute to facer delamination such as dropping or dragging objects across the roof assembly. This index can be used to estimate other rock strength parameters. Primary roof members exposed to a work floor single panel point of lower chord of roof trusses or any point along primary structural members supporting roofs over manufacturing storage warehouses and repair garages all other occupancies all roof surfaces subject to maintenanceworkers 0 96h 2 87 4 79 i.

It is important to list live load dead load and total load separately because live load is used to compute stiffness and total load is used to calculate strength. In traditional sloped roof framing loads are transmitted vertically downward through the roof framing to the exterior walls that transmit the load downward to the home s.